Take a breath, try not to think about what exactly you want to say, but maybe the idea that you are trying to get across. Then, you can subconsciously put this idea into your own words as you spew it out, almost unknowingly. I find it easier for me to speak my thoughts, as opposed to an exact sentence - if that makes any sense. I talked in my video about how I pause, collect my thoughts, and then proceed. Good luck mayn.